121101123 has 16 divisors (see below), whose sum is σ = 189697536. Its totient is φ = 67748640.

The previous prime is 121101119. The next prime is 121101133. The reversal of 121101123 is 321101121.

It is not a de Polignac number, because 121101123 - 2² = 121101119 is a prime.

It is a super-2 number, since 2×121101123² = 29330963983722258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121101099 and 121101108.

It is not an unprimeable number, because it can be changed into a prime (121101133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140715 + ... + 141572.

It is an arithmetic number, because the mean of its divisors is an integer number (11856096).

Almost surely, 2^121101123 is an apocalyptic number.

121101123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121101123 is a deficient number, since it is larger than the sum of its proper divisors (68596413).

121101123 is a wasteful number, since it uses less digits than its factorization.

121101123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282314.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 121101123 is about 11004.5955400460. The cubic root of 121101123 is about 494.7464919645.

Adding to 121101123 its reverse (321101121), we get a palindrome (442202244).

The spelling of 121101123 in words is "one hundred twenty-one million, one hundred one thousand, one hundred twenty-three".